How to install disk drives in the enclosure of HP Storage Works D2700 Disk Enclosure?

                                         

The D2700  Disk Enclosure is Flexible/ Scalable by allowing the customer to grow storage capacity easily by attaching up to two D2700 enclosures from a single Controller port, for expansion of up to 4 enclosures or 100 drives, allowing for room to grow as storage demands increase.
Disk drive options:
The HP  Storage works D 2700  disk enclosure models can support 12 or 25 disk drives depending on the model configuration supported up to  25 x 1.2TB capacity.
Disk drive guidelines:
     Take care while handling disk drives. Internal drives can be damaged when drives are shaken, dropped, or roughly placed on a work surface.
 • When installing a disk drive, press firmly to make sure the drive is fully seated in the drive bay and then close the latch handle.
 • When removing a disk drive, press the release button and pull the drive only slightly out of the enclosure. Then, to allow time for the internal disk to stop rotating, wait approximately 10 seconds before completely removing the drive from the enclosure.
• Populate hard drive bays starting with the lowest bay number. If only one hard drive is used, install it in the bay with the lowest device number.
• Disk drives are hot-pluggable.
• SAS and SATA disk drives may be installed in the same enclosure, but can not be included in the same RAID logical volume.
Installing a disk drive:
Remove the drive blank.
Unlatch and swing out the latch handle on the drive. Then, slide the drive into the bay pressing firmly on the drive to seat it. Close the latch handle, pressing firmly until it locks in place.
When a drive is inserted in an operational enclosure, the drive LEDs flash to indicate that the drive is seated properly and receiving power
       3.Determine the status of the hard drive.
           For proper airflow and cooling, a drive blank must remain installed in all unused drive bays.
How to recognize disk drive failure?
In an HP enclosure, a steadily glowing fault LED indicates that a disk drive has failed. Other indications of failed disk drives are
• ACU represents failed drives with a distinctive icon.
• HP SIM can detect failed drives remotely across a network. (For more information about HP SIM, see the documentation on the Management CD.)
• ADU lists all failed drives. • Operating System log files.
How to handle disk drive failure?
Determine which physical drive failed. On hot-plug drives, an amber drive failure LED illuminates.
 If the unit containing the failed drive does not support hot-plug drives, perform a normal shutdown.
 Remove the failed drive and replace it with a drive that is of the same capacity. 
If the drives are hot -pluggable., after securing the drive in the bay, the LEDs on the drive each flash once in an alternating pattern to indicate a successful connection. 
The online LED flashes, indicating that the controller recognized the drive replacement and began the recovery process.
 Power on the server.
 The controller reconstructs the information on the new drive, based on information from the remaining physical drives in the logical drive. 
While reconstructing the data on hot-plug drives, the online LED flashes. 
Once the drive rebuild is complete, the online LED is illuminated.
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